Balder W. Holst

IIR Filters

Infinite Impulse Response Filter. See slides.

“Vi placerer poler" - Christoffer

Har altid poler.

Procedure

  1. Filtrets specifikationer opstilles (see Filters)
  2. Filtrets z-domæne overføringsfunktion opstilles
  3. Der vælges optimal realisationsstruktur
  4. Der fremstilles program til signalprocessor eller tegnes diagram for hardwareløsning

Types of z-transformation

To create an IIR filter, the transfer function must be mapped into the z-domain. There are multiple ways of doing this.

Use capital letters for coefficients in $s$-domain.

Differences in Frequency Response

300

Differences in Impule Response

300